Combating arthropods with perfluorobenzyl 2,2-dimethyl-3-vinyl-cyclopropane carboxylates

Abstract

A pentafluorobenzyl 2,2-dimethyl-3-vinylcyclopropane carboxylate of the formula ##STR1## in which R is hydrogen or halogen, and R 1 is optionally substituted phenyl, or R and R 1 together constitute an alkylene chain with at least two carbon atoms, which possess arthropodicidal properties.

What is claimed is: 
     
       1. A pentafluorobenzyl 2,2-dimethyl-3-vinylcyclopropane carboxylate of the formula ##STR16## in which R is hydrogen or halogen, and R 1  is phenyl, halogeno phenyl or C 1-6  -alkyl phenyl, or   R and R 1  together constitute an alkylene chain with two to six carbon atoms.   
     
     
       2. A compound according to claim 1, wherein R is hydrogen, chlorine or bromine, and   R 1  is phenyl, halogenophenyl or C 1-6  -alkylphenyl, or   R and R 1  together constitute dimethylene, trimethylene, tetramethylene, pentamethylene or hexamethylene.   
     
     
       3. A compound according to claim 1, wherein such compound is pentafluorobenzyl 2,2-dimethyl-3-cyclobutylidenemethyl-cyclopropanecarboxylate of the formula ##STR17## 
     
     
       4. A compound according to claim 1, wherein such compound is pentafluorobenzyl 2,2-dimethyl-3-(2-chloro-2-p-chloro-phenyl-vinyl)-cyclopropanecarboxylate of the formula ##STR18## 
     
     
       5. A compound according to claim 1, wherein such compound is pentafluorobenzyl 2,2-dimethyl-3-cyclopropylidenemethyl-cyclopropanecarboxylate of the formula ##STR19## 
     
     
       6. A compound according to claim 1, wherein such compound is pentafluorobenzyl 2,2-dimethyl-3-cyclopentylidenemethyl-cyclopropanecarboxylate of the formula ##STR20## 
     
     
       7. A compound according to claim 1, wherein such compound is pentafluorobenzyl 2,2-dimethyl-3-cyclohexylidenemethyl-cyclopropanecarboxylate of the formula ##STR21## 
     
     
       8. An arthropodicidal composition containing as active ingredient an arthropodicidally effective amount of a compound according to claim 1 in admixture with a diluent. 
     
     
       9. A method of combating arthropods which comprises applying to the arthropods, or to a habitat thereof, an arthropodicidally effective amount of a compound according to claim 1. 
     
     
       10. The method according to claim 9, in which there is applied to a domesticated animal pentafluorobenzyl 2,2-dimethyl-3-cyclobutylidenemethyl-cyclopropanecarboxylate,   pentafluorobenzyl 2,2-dimethyl-3-(2-chloro-2-p-chloro-phenyl-vinyl)-cyclopropanecarboxylate,   pentafluorobenzyl 2,2-dimethyl-3-cyclopropylidenemethyl-cyclopropanecarboxylate,   pentafluorobenzyl 2,2-dimethyl-3-cyclopentylidenemethyl-cyclopropanecarboxylate, or   pentafluorobenzyl 2,2-dimethyl-3-cyclohexylidenemethyl-cyclopropanecarboxylate.